CPAP and medical equipment denials
CPAP and BiPAP machines, oxygen, power wheelchairs, hospital beds, and other durable medical equipment are denied for missing documentation, unmet usage requirements, or supplier problems. The rules are specific and the fix is usually paperwork.
The rule that controls this: Medicare covers CPAP for obstructive sleep apnea under National Coverage Determination 240.4 after a qualifying sleep study, with continued coverage after the first 90 days only if adherence is documented (use of at least 4 hours a night on 70 percent of nights in a consecutive 30-day period) and the physician documents benefit. Other equipment follows Medicare's DME rules (42 CFR 410.38) and supplier standards. Medicare Advantage plans must follow Medicare coverage rules (42 CFR 422.101(b)). Commercial plans apply their own equipment policies, which must be disclosed on request.
Last reviewed 13 September 2026 · General information, not legal or medical advice · Apellica is not a law firm
What gets denied
- CPAP or BiPAP after a home sleep test
- Continued CPAP rental after the 90-day compliance period
- Power wheelchairs and scooters
- Home oxygen
- Hospital beds, lifts, and continuous glucose monitors
Common denial reasons
- Sleep study does not show the apnea index the policy requires
- Compliance data from the device does not meet the usage threshold
- Face-to-face visit or written order missing or undated
- Supplier not enrolled or item not on the plan's approved list
- Plan says a less costly item meets the need
How we approach the appeal
Nearly every CPAP denial after the first three months is an adherence denial, and it is the one situation the supplier pages will not help you with, because Medicare's rule under National Coverage Determination 240.4 is mechanical: at least four hours a night on 70 percent of nights across a consecutive thirty-day window inside the first ninety days. Missing it does not mean the machine was wrong for you, and it does not have to be the end. The appeal that works documents why adherence failed and what has changed: a mask that did not fit or leaked, pressure intolerance that a switch to auto-titrating or bilevel pressure addresses, claustrophobia, nasal obstruction, or a work pattern that made the usage window impossible. Pair that with a new face-to-face visit and a physician statement, because Medicare allows a re-trial after a repeat evaluation and the plan is far more likely to approve equipment the record shows has been adjusted. Where the denial is instead about the qualifying study, check which test was done: many plans now require a home sleep apnea test first and will refuse an in-laboratory study unless the chart documents a reason the home test is unsuitable, such as significant cardiopulmonary disease, suspected central apnea, or a previous inconclusive home test. Naming that exception is usually the whole appeal. Ask in writing for the plan's own coverage policy and for the compliance data the decision relied on, since the download is frequently incomplete or covers the wrong window, and an error in it is the fastest reversal available.
Internal appeal: at least 180 days to file for commercial and employer plans; pre-service decisions within 30 days (29 CFR 2560.503-1). Medicare Advantage: 65 days to request reconsideration (42 CFR 422.582). Traditional Medicare: 120 days to request redetermination of a claim (42 CFR 405.942).
Equipment is billed as a purchase or a monthly rental; a denied device or a denied rental period is commonly hundreds to a few thousand dollars at billed charges, and higher for power mobility and oxygen.
- · The denial letter and the plan's equipment policy
- · Sleep study or diagnostic report
- · Physician's order and face-to-face visit note
- · Device compliance or usage report
- · Supplier documentation and prior authorization records
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CPAP and equipment denials by insurer
What each plan tends to cite, and the rule that controls it.
- UHC cpap and equipment denials
- Aetna cpap and equipment denials
- Cigna cpap and equipment denials
- BCBS cpap and equipment denials
- Humana cpap and equipment denials
- Medicare cpap and equipment denials
- Kaiser cpap and equipment denials
- Ambetter cpap and equipment denials
- Molina cpap and equipment denials
- BCBS FEP cpap and equipment denials
- WellCare cpap and equipment denials
This page provides general information about appeal strategy. It is not legal advice. Outcomes depend on documentation, plan terms, and timing.